the surface area of a sphere is 7.84π fr.^2 what is the radius of this sphere
The formula for the surface area of a sphere is given by:
Surface Area = 4πr^2
where r is the radius.
From the given information:
Surface Area = 7.84π fr.^2
Equating the two formulas:
4πr^2 = 7.84π
Dividing both sides by 4π:
r^2 = 7.84/4
r^2 = 1.96
Taking the square root of both sides:
r = √1.96
r ≈ 1.4
Therefore, the radius of the sphere is approximately 1.4.